Granted Patent
Utility
US 4,610,242 · App. 06/601,456
Endoscope insertion cannula assembly
Inventors:
John A. Santangelo, Michael Digiantommaso
Patented Case
View Patent ↗
Granted: Sep 9, 1986
Filed: Apr 18, 1984
Inventors
John A. Santangelo
Michael Digiantommaso
Assignee (at issue)
Codman & Shurtleff, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.